A NOTE ON THE PRESSURE DROP IN MODIFIED IN-SITU OIL SHALE RETORTS

[[abstract]]Pressure drops observed in two field pilot tests of modified in-situ oil shale retorting are reported briefly in this note. Two problems are discussed: the broad distribution of particle sizes in an in-situ rubble bed and the decrease of rubble permeability during a retort run. The field data tend to support a recently reported observation that the Ergun equation is inadequate to predict the pressure drop in a retorting oil shale rubble.[[fileno]]2010101010006[[department]]物理